The city has spent at least $8.8 million on cheap toilet paper since June 2013 – and the costs are piling up under Mayor de Blasio.

Around $1.58 million was wasted on toilet paper last fiscal year, a 12% bump since 2014, according to records obtained by The Daily News. Last month alone, the city bought $126,000 worth of toilet paper rolls.

The city uses about four million rolls every year, buying only cheap, single-ply toilet paper, according to the Citywide Administrative Services. An average of $1.45 million was spent on potty paper annually over the last few years.

New Yorkers will be able to register to vote online later this week — but the process will take even more time than snail-mail enrollment.

The Campaign Finance Board’s new web portal will go online this Thursday after the Board of Elections voted to add another step to the process, making enrolling through the new system even more cumbersome than traditional paper registration.

A City Council bill could drive a wooden stake through the heart of “zombie” campaign committees and redistribute unused war chests to taxpayers.

“Let’s kill all the zombies, give war chests back to the tax payers, so incumbents are forced to do their jobs, and elections get more competitive,” Kallos (D-Manhattan) said. “Incumbents shouldn’t need a war chest, the best protection comes from working hard and doing your job.”